Maven多模块项目搭建

为什么80%的码农都做不了架构师？>>>   

一个简单的Maven模块结构是这样的

---- app-parent
             |-- pom.xml (pom)
             |
             |-- app-util
             |        |-- pom.xml (jar)
             |
             |-- app-dao
             |        |-- pom.xml (jar)
             |
             |-- app-service
             |        |-- pom.xml (jar)
             |
             |-- app-web
                      |-- pom.xml (war)   

这些模块的依赖关系如下：

app-dao      --> app-util

app-service --> app-dao

app-web     --> app-service

新建 app-parent 父项目

    New -> Others  -> Maven Project，删除src等目录：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>com.dum.myapp</groupId>
    <artifactId>app-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
 
    <name>app-parent</name>
    <url>http://maven.apache.org</url>
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
 
    <modules>
        <module>app-util</module>
        <module>app-dao</module>
        <module>app-service</module>
        <module>app-web</module>
    </modules>
     
</project>

新建 app-util 父项目：

    在app-parent 父项目上右键， New -> Others  -> Maven Module，选择maven-archetype-quickstart

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
 
    <parent>
        <groupId>com.dum.myapp</groupId>
        <artifactId>app-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
 
    <artifactId>app-util</artifactId>
    <name>app-util</name>
 
    <dependencies>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.4</version>
        </dependency>
    </dependencies>
 
</project>

新建 app-dao 父项目：

    在app-parent 父项目上右键， New -> Others  -> Maven Module，选择maven-archetype-quickstart

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
 
    <parent>
        <groupId>com.dum.myapp</groupId>
        <artifactId>app-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
 
    <artifactId>app-dao</artifactId>
    <name>app-dao</name>
 
    <dependencies>
        <dependency>
            <groupId>com.dum.myapp</groupId>  
            <artifactId>app-util</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>
 
</project>

新建 app-service 父项目：

    在app-parent 父项目上右键， New -> Others  -> Maven Module，选择maven-archetype-quickstart

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
     
    <parent>
        <groupId>com.dum.myapp</groupId>
        <artifactId>app-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
     
    <artifactId>app-service</artifactId>
    <name>app-service</name>
     
    <dependencies>
        <dependency>
            <groupId>com.dum.myapp</groupId>  
            <artifactId>app-dao</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>
     
</project>

新建 app-web 父项目：

    在app-parent 父项目上右键， New -> Others  -> Maven Module，选择maven-archetype-webapp

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
     
    <parent>
        <groupId>com.dum.myapp</groupId>
        <artifactId>app-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
     
    <artifactId>app-web</artifactId>
    <name>app-web</name>
    <packaging>war</packaging>
     
    <dependencies>
        <dependency>  
            <groupId>com.dum.myapp</groupId>  
            <artifactId>app-service</artifactId>  
            <version>${project.version}</version>  
        </dependency> 
    </dependencies>
     
    <build>
        <finalName>app-web</finalName>
    </build>
     
</project>

项目导入

1、选中所有项目Delete Resources；

2、运行命令，清除eclipse工程文件；

mvn eclipse:clean

3、删除所有.setting文件夹，等eclipse工程想关文件或文件夹；

4、运行命令，eclipse工程文件；

mvn eclipse:eclipse

 

转载于:https://my.oschina.net/dumao/blog/741364